Transcript for Idina Menzel's Oscar Performance to Include Swarovski Crystals

All right, time now for a very special edition of "Pop news" from the red carpet. Back to Rachel smith looking gorgeous in Hollywood. Good morning. Thanks, thanks, hitting the red carpet dark and early in los Angeles. Let's jump into the Oscar Sunday edition of "Pop news." First up, fashion glitz and glam for the fashion-conscious. It's an opportunity to sport some serious bling. It's not uncommon for big starlets to rock millions of dollars worth of jewels. But it's not just the celebrities blinged out. The producers have been trekking in thousands of crystals to deck out for the performance of "Let it go" from to dazzle even the biggest stars. And we have a little sneak peek at the green room. This is the spot where the stars hang out. It's the genius work of a new York architect, David Rockwell. Hand-selected to create the spectacular space. Now check this out, it includes 86 Samsung devices on one wall. They might want to have selfie action. And 14 frame movie photos hand-picked by Susan sarandon. And about loor lounge area, the fantasy garden. It looks sheik. Hope for an awning for rain that may be coming in. And not only taken over Hollywood, but also social. As part of our partnership with Facebook, "Gma" likes the oscars. Which stars are getting the most buzz? If they were vote, Sandra bullock would have had have besting a dress, and Jennifer Lawrence for best supporting. And best actor, Matthew mcconaughey, the most except among 18-34 year Olds. They prefer Leonardo Dee Capri owe. The guys are looking at Bradley cooper, and the girls, Jared Leto. It's the eyes and hair. And the Oscar rehearsals are a crucial part, pharrell and others have been rehearsing. And we have seen the star presenters. Plenty showing up casual in jeans to practice. And find out where they have to stand on stage. And a fun nugget, there are rehearsal actors with play cards and the names of faces of those who will there. And we have this tweeted snapshot from rehearsal. Check it out. Awesome. That's "Pop news" from the red carpet. Happy Oscar Sunday. Great to see you. I interviewed a couple of weeks ago, she was nervous. Big night. Thank you. We'll be right back.

This transcript has been automatically generated and may not be 100% accurate.